package com.mall.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * @author cxx
 * @ClassName CrosConfig
 * @date 2022/10/10 20:36
 * 解决跨域问题
 */
@Configuration
public class CrossConfig implements WebMvcConfigurer {

    private static final long MAX_AGE = 24 * 60 * 60;

    /**
     * 当前跨域请求最大有效时长。这里默认1天
     */

    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*");
        //1 设置访问源地址
        corsConfiguration.addAllowedHeader("*");
        // 2 设置访问源请求头
        corsConfiguration.addAllowedMethod("*");
        // 3 设置访问源请求方法
        corsConfiguration.setMaxAge(MAX_AGE);
        source.registerCorsConfiguration("/**", corsConfiguration);
        // 4 对接口配置跨域设置
        return new CorsFilter(source);
    }

}




